JP2000069707A - Equipment for manufacturing molded motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance production efficiency by feeding mold resin from a pair of injection nozzles into a pair of molding spaces of a single die using a turntable thereby suppressing incomplete molding of a motor. SOLUTION: A turntable l2 is turned and a single die l4 is stopped at the position of a pair of injection nozzles 16. A pair of evacuation nozzles 38 are inserted into a pair of insertion openings 26 and the injection nozzles 16 are moved and the forward end thereof is inserted into a flow-in opening 18. Subsequently, thermosetting resin is injected while evacuating a pair of molding spaces 24. Consequently, the pair of molding spaces 24 are filled with the thermosetting resin through respective channels 36 and two motors are injection molded simultaneously. Upon finishing molding, the turntable 12 is turned 90 deg. and molding is performed for next die 14. Since a single molded motor is substantially manufactured with a single die 14, incomplete molding can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a molded motor in which a casing is made of a molded resin.

[0002]

2. Description of the Related Art A plurality of molded motors can be manufactured at a time by using an injection molding machine. For example, FIG. 5 shows a conventional apparatus 100 for manufacturing a molded motor.

[0003] As shown in FIG.
In the example, two molds 104 are fixed on a base 102, and the mold 104 is provided with four molding spaces 106. When a molding motor is manufactured by the manufacturing apparatus 100, a part such as a stator is put in a molding space 106, and an upper mold is overlapped with a lower mold to form a mold 104.
A thermosetting resin is injected from the injection nozzle 108 into each molding space 106 to perform injection molding.

[0004]

The manufacturing apparatus 100 described above
In the above, two molds 104 are fixed on a table 102, and one injection nozzle 108 is moved in the left-right direction to form four molding spaces 106 of each mold 104.
The thermosetting resin is injected.

However, the manufacturing apparatus 100 has a structure in which one injection nozzle 108 is moved.
Due to the structure in which the thermosetting resin is injected into four molding spaces 106 at one time, there is a problem that molding defects are likely to occur.

Accordingly, the present invention has been made in view of the above problems, and has as its object to provide an apparatus for manufacturing a molded motor which reduces molding defects of the molded motor and increases production efficiency.

[0007]

According to a first aspect of the present invention, there is provided an apparatus for manufacturing a molded motor by pouring a molding resin into a mold. These molds are provided with a pair of molding spaces capable of molding a pair of mold motors, a pair of inflow ports for flowing mold resin into these molding spaces, a pair of inflow ports, and the pair of molding spaces. And a pair of injection nozzles for injecting mold resin into the pair of inlets on the side surface of the mold, outside the peripheral surface of the rotary table, The table is rotated to perform injection molding of a mold motor using the pair of injection nozzles for each mold.

According to a second aspect of the present invention, there is provided a molding motor manufacturing apparatus, comprising:
2. The device according to claim 1, further comprising a vacuum nozzle inserted from an upper surface of the mold to evacuate a pair of molding spaces.

The case of molding a molded motor in the apparatus for manufacturing a molded motor according to claim 1 will be described.

The rotary table is rotated so that one mold and a pair of injection nozzles face each other. Then, a pair of injection nozzles are inserted into the inflow ports on the side surfaces of the mold, and the molding resin is injected from the pair of injection nozzles and flows into a pair of molding spaces inside the mold via a pair of flow paths. . Thereby, two molded motors can be molded at once. Then, after this step is completed, the rotary table is rotated again so that the next mold is opposed to the position of the pair of injection nozzles, and a mold motor is formed by the same steps as described above.

According to a second aspect of the present invention, a pair of injection nozzles for injecting a mold resin is inserted into an inflow port on a side surface of a mold, and a pair of vacuum evacuation nozzles for evacuating a pair of molding spaces is provided. Insert from the top of the mold.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
A description will be given based on FIG.

FIG. 1 is a plan view showing a conceptual configuration of a manufacturing apparatus 10 according to this embodiment.

That is, the four dies 14 are arranged on the rotary table 12 at intervals of 90 °, and the dies 14 rotate with the rotation of the rotary table 12.

On the other hand, a pair of injection nozzles 16 for injecting the molding resin are provided on the outer periphery of the rotary table 12. When the mold 14 is rotated by the rotary table 12 and comes to a position facing the pair of injection nozzles 16, 16,
16 extends and is inserted into an inflow port 18 on the side surface of the mold 14.

The mold 14 comprises an upper mold 20 and a lower mold 22, and a pair of molding spaces 24, 24 of a mold motor is formed by combining the upper and lower molds 20, 22. Further, a pair of molding spaces 24,
A pair of evacuation nozzles 38 and 3 for evacuating 24
Eight pairs of insertion ports 26, 26 are provided.

FIGS. 2 to 4 show a specific example of the manufacturing apparatus 10 having the above-described configuration. The same reference numerals are used for members having the same concept.

As shown in FIG. 2, the pair of injection nozzles 16 are provided on an injection nozzle base 32, respectively.
The air cylinder 34 can be inserted into the inflow port 18.

At a position outside the peripheral surface of the rotary table 12 and at a position different from the injection nozzle table 32, a take-out table 28 for taking out the molded motor is provided. In this position, only the upper mold 20 is lifted upward,
Only the lower mold 22 is pulled out to the take-out stand 28 along the rails 30, 30.

Further, when the pair of injection nozzles 16 are inserted into the inflow ports 18 provided on the side surface of the mold 14, the injection nozzles 16 also have a predetermined angle θ (for example, from the side surface of the mold 14).
θ = 17.5 °). By inserting the injection nozzles at an angle in this manner, the pair of injection nozzles 16 can be easily inserted without interfering with each other.

FIG. 3 is a plan view of the lower mold 22 of the mold 14, and FIG. 4 is a bottom view of the upper mold 20.

A pair of inlets 18 and 1 are provided on the side of the mold 14.
8, a pair of molding spaces 24, 24 for molding the mold motor are provided inside the mold 14, so that the thermosetting resin flows from the inflow ports 18, 18 to the pair of molding spaces 24. A pair of flow paths 36, 36 are provided. The upper die 20 is provided with a pair of insertion ports 26, 26 for inserting a pair of vacuum evacuation nozzles 38, 38.

A case in which a molding motor is formed using the manufacturing apparatus 10 having the above configuration will be described.

The rotary table 12 is rotated to stop one mold 14 at the position of the pair of injection nozzles 16. Thereafter, the pair of vacuuming nozzles 38, 38 are inserted into the pair of insertion ports 26, 26, and the pair of injection nozzles 16, 1 are inserted.
6 is moved to insert its tip into the inflow port 18, and the thermosetting resin is injected while the interior of the pair of molding spaces 24, 24 is evacuated. Then, a pair of molding spaces 24, 24 are filled with a thermosetting resin through the respective flow paths 36, 36, and two molding motors are injection-molded at a time.

The molded mold 14 is mounted on the turntable 1
By rotating 2 by 90 °, the position of the pair of injection nozzles 16, 16 is separated, and the next mold 14 stops at the position of the pair of injection nozzles 16, 16.

As described above, the four dies 14 are formed one after another, and the formed dies 14 are removed from the take-out table 2.
At the position 8, the upper die 20 is lifted upward, and only the lower die 22 is pulled out to this take-out stand 28 along the rails 30, 30. After removing the molded motor from the lower mold 22, the empty lower mold 22 is returned to the turntable 12 again, and the upper mold 20 is covered.

In the above-described mold 14, a pair of molding spaces 24, 24 are provided.
Since the thermosetting resin flows into the respective molding spaces 24, 24 via the respective flow paths 36, 36 by the respective molding spaces 6, 16, one mold motor is substantially manufactured by one mold. Equivalent to Therefore, unlike the conventional case where four molded motors are molded at once,
No molding failure occurs. Rotary table 1
Since four molds 14 are provided on 2 and molding is performed in order, even when molding eight molded motors as in the conventional case, the production efficiency is higher than in the conventional case.

[0028]

As described above, according to the molding motor manufacturing apparatus of the present invention, since the molding resin is fed from the pair of injection nozzles to the pair of molding spaces of one mold by the rotary table, respectively, it is practically possible. Since it is equivalent to forming one mold motor with one mold, the conventional molding failure does not occur.

Further, since a plurality of molds are sequentially stopped at the positions of the pair of injection nozzles on the rotary table to perform molding,
Increases production efficiency.

[Brief description of the drawings]

FIG. 1 is a plan view showing the concept of a manufacturing apparatus showing one embodiment of the present invention.

FIG. 2 is a plan view of the manufacturing apparatus of the present embodiment.

FIG. 3 is a plan view of a lower mold of the embodiment.

FIG. 4 is a bottom view of the upper die of the embodiment.

FIG. 5 is a plan view of a conventional manufacturing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Manufacturing apparatus 12 Rotary table 14 Die 16 Injection nozzle 18 Inflow port 20 Upper die 22 Lower die 24 Molding space 26 Insertion port

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Takeshiro Tanabe 13-10 Ekimaecho, Obama City, Fukui Prefecture Inside the Shibaura Works Obama Plant (72) Inventor Yasunobu Yuki 13-10 Ekimaemachi, Obama City, Fukui Prefecture (72) Inventor Yasuyuki Arai 13-10 Ekimaecho, Obama-shi, Fukui Prefecture F-term (reference) 5H605 AA07 AA08 BB05 CC01 GG18 GG20 5H615 AA01 BB01 PP28 SS13 SS44 TT31

Claims (2)

[Claims] 1. An apparatus for manufacturing a mold motor by pouring a mold resin into a mold, wherein a plurality of molds are arranged at predetermined angles on a rotary table, and these molds are a pair of molds capable of forming a pair of mold motors. A molding space, a pair of inflow ports for allowing the molding resin to flow into these molding spaces, and a pair of flow paths connecting the pair of inflow ports and the pair of molding spaces; A pair of injection nozzles for injecting a mold resin into the pair of inflow ports are provided outside a peripheral surface of the rotary table, and the rotary table is rotated to set the pair of injection nozzles for each mold. A molding motor manufacturing apparatus, wherein injection molding of a molded motor is performed by using the apparatus. 2. A molding motor manufacturing apparatus according to claim 1, further comprising a vacuuming nozzle inserted from an upper surface of said mold to evacuate a pair of molding spaces.